Rotor dynamic Analysis of 120 MW Turbine Generator
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Alfa-Tranzit Co., Ltd
Bearings for quasiBearings for quasi--nonlinear analysisnonlinear analysis
-- Plain sleeve Plain sleeve bearingsbearings
-- Lemon bearingsLemon bearings
Alfa-Tranzit Co., Ltd(495)232-60-91
www.alfatran.com
-- MultiMulti--lobe lobe sleeve bearingssleeve bearings
-- Tilting padsTilting pads
-- etcetc
Rotor model of Turbine Generator Rotor model of Turbine Generator
5 multi5 multi--lobe journal bearingslobe journal bearings
Alfa-Tranzit Co., Ltd(495)232-60-91
www.alfatran.com
Bearings Stiffness and Damping Coefficients Bearings Stiffness and Damping Coefficients
Bearing 5
-3,00E+09
-2,00E+09
-1,00E+09
0,00E+00
1,00E+09
2,00E+09
3,00E+09
4,00E+09
5,00E+09
6,00E+09
7,00E+09
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
Speed rpm
Sti
ffn
es
N
/m
Kxx
Kxy
Kyx
Kyy
Bearing 5
2,00E+07
4,00E+07
6,00E+07
8,00E+07
1,00E+08
1,20E+08
Da
mp
ing
N
s/m
Cxx
Cxy
Cxy
Cyy
Alfa-Tranzit Co., Ltd(495)232-60-91
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-4,00E+07
-2,00E+07
0,00E+00
2,00E+07
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
Speed rpm
Da
mp
ing
N
s/m
Natural frequenciesNatural frequencies
Alfa-Tranzit Co., Ltd(495)232-60-91
www.alfatran.com
Natural frequencies and mode shapes (3600 rpm)Natural frequencies and mode shapes (3600 rpm)
28,1 Hz28,1 Hz
Green orbits Green orbits –– forward whirlsforward whirlsBlue orbitsBlue orbits–– backward whirlsbackward whirls
Alfa-Tranzit Co., Ltd(495)232-60-91
www.alfatran.com
31,3 Hz31,3 Hz
32,0 Hz32,0 Hz
Natural frequencies and mode shapes (3600 rpm)Natural frequencies and mode shapes (3600 rpm)
35,3 Hz35,3 Hz
Green orbits Green orbits –– forward whirlsforward whirlsBlue orbitsBlue orbits–– backward whirlsbackward whirls
Alfa-Tranzit Co., Ltd(495)232-60-91
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45,6 Hz45,6 Hz
43,5 Hz43,5 Hz
Natural frequencies and mode shapes (3600 rpm)Natural frequencies and mode shapes (3600 rpm)
49,4 Hz49,4 Hz
50,0 Hz50,0 Hz
Green orbits Green orbits –– forward whirlsforward whirlsBlue orbitsBlue orbits–– backward whirlsbackward whirls
Alfa-Tranzit Co., Ltd(495)232-60-91
www.alfatran.com
50,0 Hz50,0 Hz
57,6 Hz57,6 Hz
60,6 Hz60,6 Hz
Natural frequencies and stability mapsNatural frequencies and stability maps
Natural frequencies mapNatural frequencies map
Stability mapStability map
Alfa-Tranzit Co., Ltd(495)232-60-91
www.alfatran.com
Unbalance responseUnbalance response
0,00
0,01
0,02
0,03
0,04
0,05
0,06
0,07
0,08
0,09
0,10
0,11
0,12
0,13
500 1000 1500 2000 2500 3000 3500 4000 4500
Unbalance response[shaft1].[989.584 1 Brg].[8.4.2008 (9:5)]
[mm
][e
-2]
[]
0,0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
500 1000 1500 2000 2500 3000 3500 4000 4500
Unbalance response[shaft1].[989.584 1 Brg].[8.4.2008 (9:8)]
[mm
][e
-3]
[]
0,4
0,5
0,6
0,7
Unbalance response[shaft1].[7707.88 2 Brg ].[8.4.2008 (9:9)]
[mm
][e-3
]
0,06
0,07
0,08
0,09
0,10
0,11
Unbalance response[shaft1].[7707.88 2 Brg ].[8.4.2008 (9:10)]
[mm
][e-2
]
Br_1 _YBr_1 _Y
Br_2_YBr_2_Y
Br_1 _XBr_1 _X
Br_2_XBr_2_X
OrbitsOrbits
OrbitsOrbits
Alfa-Tranzit Co., Ltd(495)232-60-91
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0,0
0,1
0,2
0,3
0,4
500 1000 1500 2000 2500 3000 3500 4000 4500
[mm
][e-3
]
[]
0,00
0,01
0,02
0,03
0,04
0,05
0,06
500 1000 1500 2000 2500 3000 3500 4000 4500[m
m][e-2
]
[]
0,000
0,025
0,050
0,075
0,100
0,125
0,150
0,175
0,200
500 1000 1500 2000 2500 3000 3500 4000 4500
Unbalance response[shaft1].[9050.78 3 Brg].[8.4.2008 (9:11)]
[mm
][e-2
]
[]
0,000
0,025
0,050
0,075
0,100
0,125
0,150
0,175
0,200
0,225
500 1000 1500 2000 2500 3000 3500 4000 4500
Unbalance response[shaft1].[9050.78 3 Brg].[8.4.2008 (9:12)]
[mm
][e-2
]
[]
Br_3_YBr_3_Y Br_3_XBr_3_X
OrbitsOrbits
Unbalance response (3DUnbalance response (3D--chart)chart)
YY--directiondirection
XX--directiondirection
Alfa-Tranzit Co., Ltd(495)232-60-91
www.alfatran.com
XX--directiondirection
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